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Fun Facts on the Human Digestive System
An average person produces 2 pints of saliva each day. That is equal to 2 cans of soda.
The muscles in your esophagus have a giant wave action called peristalsis. Peristalsis helps to move food or drinks down in our stomachs.
The gut-brain axis is the close bond that exists between the digestive system and your brain. Emotions (including stress) and brain disorders affect how your body digests food.
Our body can move the food we ate through the digestive system even when we are sleeping or standing upside down on our heads. The movement of food is not connected to gravity because it works with muscles.
Some of the chemicals advertised in laundry detergents that promise to remove stains can be found in our enzymes.
The small intestine is about 22-23 feet long while the large intestine is only about 5 feet long.
The growling of the stomach is called borborygmic. It is normal and it happens all the time. It sounds louder when our stomach is empty because there is no food to muffle the sound.
The stomach is made of flexible muscles. They have the ability to stretch and hold up to 4 pounds of food at one time.
Aerobic exercise is the best type of exercise to keep your digestive tract in shape.
We don’t have any of the healthy bacteria our system needs to digest food at the time of our birth. They are developed later.
We burp to release extra air that we swallow if we eat fast, drink carbonated drinks, or smoke.
Hiccups can be caused by a swallowing fast that leads to a change in temperature. All of it happens suddenly.
The amount of saliva we produce increases suddenly when we vomit to protect our teeth from the acid in our stomach that comes up.
The longest attack of constant hiccups in humans lasted 68 years
Learn about the parts and functions of the Human Excretory System here.
Interesting Facts About Human Bones and Skeletal System
Our body has two types of bones. The dense, hard bone is called cortical bone. They are structural bones. The second type is a soft and spongy bone called trabecular bone. It is often found inside large bones and in your pelvis, ribs, and skull.
Bone marrow is a spongy substance. It houses stem cells in the hips, pelvis, and femur.
Babies are born with 300 bones. The tiny bones fuse together to form the larger bones of the skeletal system.
The stapes bone is the smallest bone in our body and it is located in our ear.
The femur, which runs from your hip to your knee, is the longest, strongest and largest bone in your body.
Bones are designed to take a beating, wear and tear.
More than half our bones, that is 106 bones are in our hands and feet.
Most people have 12 ribs, but some, only 1 per cent of the population have 13.
The knee joint connects the three largest bones, femur, tibia, and patella. Hence, it is the largest joint in the human body.
Only 10 per cent of the world’s animals including humans are vertebrates.
Our teeth are stronger than our bones.
Bones heal naturally, our body will go to work producing new bone cells and helping heal the break caused by the fracture.
Bones lose strength over time. Keeping them strong requires eating calcium-rich foods like dairy products, broccoli, and some fish.
Arms are among the most commonly broken bones, accounting for almost half of all adults’ broken bones.
Our bones are stronger than steel. A block of bone the size of a matchbox can support up to 18,000 pounds of weight.
Bones stop growing in length when we reach puberty. However, bone density and strength will change throughout the course of life.
A V-shaped bone located at the base of the tongue called hyoid is the only bone in the human body that is not connected to another bone.
Ligaments are short bands of tough fibrous connective tissue while tendons are made of elastic tissue and cartilage that covers the bone surface is made from fibrous tissue.
Joints in the skull don’t move. Moving joints are called synovial joints. They contain synovial fluid, which helps them to move freely. Ball and socket joints are the most mobile type of joint.
Ellipsoidal joints, such as the one at the base of the index finger, allow bending and extending.
Gliding joints are found between flat bones that are held together by ligaments. Some bones in the wrists and ankles move by gliding against each other.
Hinge joints are those in the knee and elbow. They enable movement similar to the way a hinged door moves.
Learn all about the Human Skeleton System here.
Fun and Amazing Facts About the Human Sensory Organs
Humans can hear sounds up to 20 kHz.
The cilia or body hair present in the ear push earwax out of the ear naturally.
We blink our eyes about 20 times a minute.
Our ears never stop growing.
Ear piercing is the oldest form of body modification.
Hearing and touch are the only senses that are types of mechanosensation.
Everything appears two-dimensional to us if we see with only one eye.
Human eyes are made of over two million working parts in total.
Newborn babies see everything upside down until the brain learns to process everything right side up.
The sense of touch is the first to develop in human babies inside the womb. It takes about 8 weeks into the gestation period.
Touch stimulates the brain to release endorphins.
Touch can reduce heart pressure and stress.
People lose their perception of taste as they age. Half of the receptors are gone by 20.
A human’s taste sense interacts with other senses and factors, including smell, texture, and temperature.
Every person smells things differently because of the over 900,000 genetic variations of olfactory receptors.
Good smells can make you happier.
The smell can affect body growth and functions like puberty, attract mates, and alter menstrual cycles.
Earwax is actually a type of sweat!
The tongue is covered in about 8,000 taste buds, each containing up to 100 cells helping you taste your food!
You are about 1cm taller in the morning when you first get up than when you go to bed. This is because during the day the soft cartilage between your bones gets squashed and compressed.
The entire surface of our skin is replaced every month.
Learn more about Sensory Organs here.
Other Fun Facts on Human Body
Our body produces 25 million new cells each second.
Despite not being the biggest, largest or fastest animals, only humans can run for long distances.
About 60% of your body is made up of water.
Every minute we shed over 30,000 dead skin cells.
If we live up to the age of 70, our heart would have beaten around 2.5 billion times!
Our brain is sometimes more active when you’re asleep than when you’re awake.
The word “muscle” comes from Latin words meaning “little mouse“ as ancient Romans thought muscle flex resemble the movement of a small mouse.
Human Bodies give off a tiny amount of light. However, it is too weak for the eye to see.
We lose about 4kg of skin cells every year!
Babies don’t shed tears until they’re at least one month old.
The strongest muscle in our body is based on its weight and it is the masseter in the jaw.
So, this is all about the Fun and Amazing Facts on the Human Body. Get some practice of the same on our free Testbook App. Download Now!
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Amazing Facts about the Human Body
Learning Resources | Posted On Sep 5, 2022 | Learn
Did you know that a lot of the dust you find in your home is actually dead skin cells? Or that your mouth produces about one litre of saliva every day — enough to fill a bathtub twice in a year! Our bodies can do some amazing things, and they do everyday without us even knowing. From the moment we open our eyes in the morning until the moment we close them at night, the different parts of our bodies are working really hard. Carry on reading to discover some amazing facts about the human body for kids.
Check out other fascinating facts for kids:
Facts About Dinosaurs For Kids
10 Facts about Volcanoes
10 Interesting Facts about Earth
Amazing facts about the human body
How long are the blood vessels? If you laid out all the blood vessels in an adult’s body end to end, it would circle Earth’s equator four times — that’s almost 100,000 miles!
The human heart beats more than three billion times in an average lifespan, it’s the only muscle in the body that doesn’t get tired.
Human teeth are just as strong as shark’s teeth!
Is it true babies have more bones than adults? Yes, it is. Babies are born with 300 bones and an adult has 206. As babies grow up, some of the bones fuse together to form one bone. More than half of an adult’s bones are in their hands and feet.
How big is a brain? The brain of an adult weighs about 3 pounds and about 3/4s of that is water and isn’t properly formed until you are 25 years old.
What is the biggest bone? The longest bone in a body is the femur, it is the thigh bone. The smallest is called the staple (or stirrup) and it is in your ear. It’s only 2.8mm long.
Fifty percent of your hand strength comes from your little finger.
Can two people have the same fingerprint? No, everybody in the world has their own unique fingerprints. This help police to catch criminals.
You can’t breathe and swallow at the same time.
You'll blink your eyes 500 million times in your lifetime - that's 15 times a minute.
- Writer
